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Synthetic Organic Chemistry Methods
Research Guide
What is Synthetic Organic Chemistry Methods?
Synthetic Organic Chemistry Methods are techniques in organic chemistry that employ selective reactions, such as olefin metathesis using ruthenium-based catalysts, to construct complex molecules efficiently while maximizing atom economy and enabling applications in polymerization, enantioselective synthesis, natural product synthesis, and industrial processes.
This field encompasses 86,449 works focused on advances in olefin metathesis chemistry, particularly ruthenium-based catalysts for ring-closing metathesis and cross-metathesis. Key developments include highly active, air- and water-tolerant ruthenium complexes that support ring-closing metathesis at elevated temperatures, as shown by Scholl et al. (1999). These methods emphasize selectivity (chemo-, regio-, diastereo-, and enantio-) and atom economy to assemble complex molecular arrays.
Topic Hierarchy
Research Sub-Topics
Ruthenium Catalysts in Olefin Metathesis
This sub-topic covers the design, synthesis, and mechanistic studies of ruthenium-based catalysts for olefin metathesis reactions. Researchers optimize ligand variations and catalyst stability for enhanced reactivity and selectivity.
Ring-Closing Metathesis Applications
This sub-topic examines ring-closing metathesis (RCM) for constructing cyclic compounds, including medium and large rings. Researchers explore substrate scope, stereocontrol, and applications in complex molecule synthesis.
Cross-Metathesis Reaction Optimization
This sub-topic focuses on improving selectivity and efficiency in cross-metathesis (CM) between different olefins. Researchers develop chemo- and stereoselective protocols and study catalyst deactivation mechanisms.
Olefin Metathesis in Polymerization
This sub-topic investigates ring-opening metathesis polymerization (ROMP) and acyclic diene metathesis (ADMET) for polymer synthesis. Researchers tailor materials properties for advanced applications like self-healing composites.
Enantioselective Olefin Metathesis
This sub-topic develops chiral ruthenium catalysts for asymmetric olefin metathesis reactions. Researchers achieve high enantioselectivity in desymmetrization and kinetic resolutions for chiral molecule synthesis.
Why It Matters
Synthetic Organic Chemistry Methods enable efficient construction of pharmaceuticals and materials through precise carbon-carbon bond formation. Grubbs and Trnka (2000) detailed ruthenium catalysts that facilitate olefin metathesis for natural product synthesis and polymerization, with 3505 citations reflecting their broad adoption. Scholl et al. (1999) introduced ruthenium complexes with 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene ligands that enhance ring-closing metathesis activity, applied in industrial processes. Trost (1991) established atom economy principles, guiding selective syntheses that minimize waste, as in the isolation and structural elucidation of taxol by Wani et al. (1971), an antileukemic agent from Taxus brevifolia with 4006 citations. These advances support drug development, evidenced by Newman and Cragg (2012) documenting natural products as sources of new drugs over 1981-2010, with 4626 citations.
Reading Guide
Where to Start
"The Atom Economy—A Search for Synthetic Efficiency" by Trost (1991), as it provides foundational principles of selectivity and efficiency applicable to all metathesis and catalysis methods in the field.
Key Papers Explained
Trost (1991) establishes atom economy and selectivity criteria that underpin efficient metathesis. Trnka and Grubbs (2000) build on this with L2X2Ru=CHR catalysts, enabling versatile olefin metathesis. Scholl et al. (1999) advance Grubbs' work by introducing dimesityl-dihydroimidazolylidene ruthenium complexes with superior ring-closing activity. Herrmann (2002) explains N-heterocyclic carbenes as key ligands enhancing these catalysts' performance.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Current efforts focus on refining ruthenium catalysts for enhanced functional group tolerance and scalability, as indicated by keyword emphases on enantioselective synthesis and industrial applications in the 86,449 works.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | The Atom Economy—A Search for Synthetic Efficiency | 1991 | Science | 4.7K | ✕ |
| 2 | Natural Products As Sources of New Drugs over the 30 Years fro... | 2012 | Journal of Natural Pro... | 4.6K | ✓ |
| 3 | Autonomic healing of polymer composites | 2001 | Nature | 4.4K | ✕ |
| 4 | Plant antitumor agents. VI. Isolation and structure of taxol, ... | 1971 | Journal of the America... | 4.0K | ✕ |
| 5 | New Polymer Synthesis by Nitroxide Mediated Living Radical Pol... | 2001 | Chemical Reviews | 3.8K | ✕ |
| 6 | N-Heterocyclic Carbenes: A New Concept in Organometallic Catal... | 2002 | Angewandte Chemie Inte... | 3.8K | ✕ |
| 7 | Stable Carbenes | 1999 | Chemical Reviews | 3.5K | ✕ |
| 8 | The Development of L<sub>2</sub>X<sub>2</sub>RuCHR Olefin Meta... | 2000 | Accounts of Chemical R... | 3.5K | ✕ |
| 9 | Synthesis and Activity of a New Generation of Ruthenium-Based ... | 1999 | Organic Letters | 3.4K | ✕ |
| 10 | Late-Metal Catalysts for Ethylene Homo- and Copolymerization | 2000 | Chemical Reviews | 3.1K | ✕ |
Frequently Asked Questions
What is olefin metathesis in synthetic organic chemistry?
Olefin metathesis is a carbon-carbon bond-forming reaction catalyzed by ruthenium complexes, enabling ring-closing metathesis and cross-metathesis. Trnka and Grubbs (2000) described L2X2Ru=CHR catalysts that are highly active and compatible with functional groups. These catalysts have expanded applications in polymerization and natural product synthesis.
How do ruthenium-based catalysts improve metathesis reactions?
Ruthenium catalysts coordinated with 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene ligands exhibit increased activity for ring-closing metathesis at elevated temperatures and tolerate air and water. Scholl et al. (1999) synthesized such complexes from RuCl2(=CHPh)(PCy3)2. This generation outperforms prior catalysts in functional group compatibility.
What is atom economy in synthetic methods?
Atom economy measures synthetic efficiency by the proportion of reactant atoms incorporated into the product. Trost (1991) advocated reactions that are selective and maximize atom count in products. Efficient methods assemble complex arrays with minimal waste.
What role do N-heterocyclic carbenes play in catalysis?
N-heterocyclic carbenes serve as ligands in organometallic catalysis, binding to transition metals and main group elements. Herrmann (2002) highlighted their universal coordination due to strong sigma-donation and minimal pi-acceptor properties. They enhance catalyst stability in olefin metathesis.
How are synthetic methods applied to natural product synthesis?
Olefin metathesis enables construction of complex natural products through selective bond formation. Advances in ruthenium catalysts support enantioselective synthesis, as in taxol isolation by Wani et al. (1971). Newman and Cragg (2012) reviewed natural products as drug sources from 1981-2010.
Open Research Questions
- ? How can ruthenium catalysts achieve higher selectivity in cross-metathesis with sterically hindered olefins?
- ? What modifications to N-heterocyclic carbene ligands optimize activity for enantioselective metathesis?
- ? Which catalyst designs minimize byproduct formation in large-scale industrial polymerization via olefin metathesis?
- ? How do late-metal catalysts compare to ruthenium systems in copolymerization efficiency and functional group tolerance?
Recent Trends
The field comprises 86,449 works on olefin metathesis and ruthenium catalysts, with sustained emphasis on ring-closing metathesis, cross-metathesis, and applications in polymerization and natural product synthesis per cluster description.
High-citation papers like Scholl et al. (1999, 3401 citations) and Trnka and Grubbs (2000, 3505 citations) highlight persistent focus on catalyst improvements.
No recent preprints or news in the last 12 months available.
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